Provided is a sealant sheet formed in a sheet shape. The sealant sheet comprises an epoxy group-containing polysulfide polymer (AB) having two or more epoxy groups per molecule, a thiol compound (C) having two or more thiol groups per molecule, and a photobase generator (D); or a thiol group-containing polysulfide polymer (AC) having two or more thiol groups per molecule, an epoxy compound (B) having two or more epoxy groups per molecule, and a photobase generator (D).

Provided is a sealant sheet formed in a sheet shape. The sealant sheet comprises an epoxy group-containing polysulfide polymer (AB) having two or more epoxy groups per molecule, a thiol compound (C) having two or more thiol groups per molecule, and a photobase generator (D); or a thiol group-containing polysulfide polymer (AC) having two or more thiol groups per molecule, an epoxy compound (B) having two or more epoxy groups per molecule, and a photobase generator (D).

Provided is a sealant sheet formed in a sheet shape. The sealant sheet comprises an epoxy group-containing polysulfide polymer (AB) having two or more epoxy groups per molecule, and a thiol compound (C) having two or more thiol groups per molecule. In the sealant sheet, sulfur atoms in organic components of the sealant sheet has a weight fraction of 32.0% or higher and 36.0% or lower.

Provided is a sealing material for multi-layered glasses, including: a polysulfide resin (A) and a polyester resin (B) which is represented by Formula (1-1): ##STR00001##
or Formula (1-2): ##STR00002##
wherein A represents a dibasic acid residue, G represents a diol residue, X.sub.1 and X.sub.2 represent a hydrogen atom or a group represented by Formula (2-1): ##STR00003## wherein R represents an aromatic group or an aliphatic group, and X.sub.3 and X.sub.4 represent an aromatic group or an aliphatic group, n and m each represent the average number of repetitions of a repeating unit in parentheses and are each a numerical value larger than 0, and some or all A's are aromatic dibasic acid residues, and which has an aromatic dibasic acid residue content of 20 to 70% based on chemical formula weights calculated from the chemical formulae represented by [ ].sub.N and [ ].sub.M and also has a number average molecular weight of 400 to 5,000.

Provided is a sealing material for multi-layered glasses, including: a polysulfide resin (A) and a polyester resin (B) which is represented by Formula (1-1): ##STR00001##
or Formula (1-2): ##STR00002##
wherein A represents a dibasic acid residue, G represents a diol residue, X.sub.1 and X.sub.2 represent a hydrogen atom or a group represented by Formula (2-1): ##STR00003## wherein R represents an aromatic group or an aliphatic group, and X.sub.3 and X.sub.4 represent an aromatic group or an aliphatic group, n and m each represent the average number of repetitions of a repeating unit in parentheses and are each a numerical value larger than 0, and some or all A's are aromatic dibasic acid residues, and which has an aromatic dibasic acid residue content of 20 to 70% based on chemical formula weights calculated from the chemical formulae represented by [ ].sub.N and [ ].sub.M and also has a number average molecular weight of 400 to 5,000.

Compositions for modifying a degree of cure in a polysulfide sealant are provided. In embodiments, the composition comprises a water-miscible organic solvent; water; and a dithiol. Polysulfide sealant systems comprising the compositions are also provided. Methods for modifying a degree of cure in a polysulfide sealant using the compositions are also provided.

Compositions for modifying a degree of cure in a polysulfide sealant are provided. In embodiments, the composition comprises a water-miscible organic solvent; water; and a dithiol. Polysulfide sealant systems comprising the compositions are also provided. Methods for modifying a degree of cure in a polysulfide sealant using the compositions are also provided.

Provided are two-component curable compositions and methods thereof. The composition includes a base component comprised of a curable resin and a first compressible filler dispersed therein. The composition further includes a curative component comprised of a curing agent and a second compressible filler dispersed therein. The base and curative components react with each other upon mixing to provide a crosslinked network. When used with automated metering pumps, the compressibility of the base and curing agent components can be matched, allowing for a constant mix ratio despite variability in applied pressure.

Provided are two-component curable compositions and methods thereof. The composition includes a base component comprised of a curable resin and a first compressible filler dispersed therein. The composition further includes a curative component comprised of a curing agent and a second compressible filler dispersed therein. The base and curative components react with each other upon mixing to provide a crosslinked network. When used with automated metering pumps, the compressibility of the base and curing agent components can be matched, allowing for a constant mix ratio despite variability in applied pressure.

Polysulfide compositions having a polyether synergist are disclosed. Polysulfide compositions that contain polyether synergists exhibit a rapid onset of cure and have acceptable final properties. The polysulfide compositions can be used as sealants.